Goodwell, OK 73939 Frost Dates
Frost dates for Goodwell, OK, ZIP 73939
Around 04/22 is the usual last spring frost, about 237 days away. The first fall frost typically arrives around 10/22, about 182 frost-free days later.
Goodwell sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 6b around Goodwell has about 8 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 04/22 isn't a guarantee
04/22 is the middle of 30 years of NOAA records, not a promise. Plant by 04/08 and you're betting against frost in roughly 9 years out of 10. 05/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Goodwell compares
About 182 days separate Goodwell's last and first frost, putting it 24,233 of 40,283 ZIP codes nationally. Within OK, it ranks 762 of 764.
Learn more
local microclimates explains what one yard in Goodwell can differ from the 73939 normal, and zone vs. frost date explains why Zone 6b and Goodwell's frost date answer different questions.